EVERYDAY SCIENCE

Detailed explanation-1: -Most atmospheric ozone is concentrated in a layer in the stratosphere, about 9 to 18 miles (15 to 30 km) above the Earth’s surface (see the figure below). Ozone is a molecule that contains three oxygen atoms.

Detailed explanation-2: -90% of the planet’s ozone is in the “ozone layer” which exists in the lower level (20-25 kilometres above sea level) of the stratosphere. The stratosphere is the region of the atmosphere which exists between 10 and 50 kilometres above the surface of the earth.

Detailed explanation-3: -“The ozone layer is a region in the earth’s stratosphere that contains high concentrations of ozone and protects the earth from the harmful ultraviolet radiations of the sun.”

Detailed explanation-4: -The ozone layer sits in the stratosphere between 15 km and 30 km above the earth, and shields us and other living things from the sun’s harmful ultraviolet radiation.

Detailed explanation-5: -Here the diatomic oxygen (O2) began reacting with incoming ultraviolet radiations from the Sun to form nascent oxygen (a highly reactive monoatomic oxygen). This highly reactive oxygen atom reacts with the O2 molecule to form ozone which contains 3 atoms of oxygen.